Strength Training exercises also help you increase endurance, regardless of what kind of runner you are. From the ultra-marathoners to the weekend joggers, every runner increases their endurance levels through regular strength training. You’ll run further, faster, and for longer periods of time. You may also notice that your cool-down period becomes shorter and your lung capacity improves significantly. This happens because your heart is pumping blood to areas of the body that don’t receive much exercise, it also causes oxygenated blood to be sent to these areas faster. Endurance might just be the number one benefit runners receive after beginning a strength-training program.